Galina V. Astratova
Pages: 1-27
Svetla Rakadzhiyska
Pages: 39-55
Olga Borisova
Pages: 77-97
Olga Borisova
Pages: 146-166
Mariyana Nikolova and Petya Byalmarkova
Pages: 175-182
Neli Nikolova
Pages: 191-206
Milen Velev
Pages: 215-221
Violeta Ilieva
Pages: 230-238
Vladimir Klimuk and Alla Nikishova
Pages: 28-38
Olga Borisova
Pages: 56-76
Gergana Marinova
Pages: 98-131
Iliyana Krasteva
Pages: 132-145
Milen Velev
Pages: 167-174
Olga Borisova
Pages: 183-190
Yanka Prodanova and Todor Kundurzhiev
Pages: 207-214
Yana Vasileva
Pages: 222-229
NATURAL AND TECHNICAL SCIENCES SECTION
Tanya Avramova
Pages: 239-252
Borislav Grigorov and Assen Assenov
Pages: 253-257